| ( | 53 250 | + | 1121 1000 | x | ) | ÷ | ( | 1 | + | x | ) | = | 1 4 |
| 方程两边同时乘以: | ( | 1 | + | x | ) |
| ( | 53 250 | + | 1121 1000 | x | ) | = | 1 4 | ( | 1 | + | x | ) |
53 250 | + | 1121 1000 | x | = | 1 4 | ( | 1 | + | x | ) |
53 250 | + | 1121 1000 | x | = | 1 4 | × | 1 | + | 1 4 | x |
53 250 | + | 1121 1000 | x | = | 1 4 | + | 1 4 | x |
1121 1000 | x | − | 1 4 | x | = | 1 4 | − | 53 250 |
871 1000 | x | = | 1 4 | − | 53 250 |
871 1000 | x | = | 19 500 |
| x | = | 19 500 | ÷ | 871 1000 |
| = | 19 500 | × | 1000 871 |
| = | 19 | × | 2 871 |
| x | = | 38 871 |
| x | = | 0.043628 |